this is bbc news. we will have the headlines and all the main news stories for you at the top of the hour straight after this programme. this week, shiona has been to sweden to see how new organs

could be printed in a lab. meanwhile, lara has been creating body parts of a different kind. what's happened to my ear? nick talks to a man in a box. and the man hunting the missing cryptoqueen explains how to find someone from a single selfie. even if i posted a picture of me in my back garden, there is a possibility someone could work out my home address, because i've done it to them. nearly 7,000 people in the uk right now need organ transplants. sometimes the wait for these lifelines can be long and agonising. and not everyone survives them. we clearly need more donors. but 3—d printing might be able to offer a solution. yeah, scientists are developing a method to create organs from living tissue, which can then be transplanted into patients who need them. and shiona mccallum has been to gothenburg, in sweden,

to find out more. it's been more than 70 years since the first successful organ transplant, a kidney. the chances of further operations of this kind being conducted. people who want to donate their organs can have their names put on a computer by using, for example, a new type of driving licence application form. and thanks to the donor register, hearts, lungs and livers are now among the 100,000 organs replaced every year. when you lose someone and they've given that gift, that huge gift, you are immensely proud of them. but even now, it remains a difficult wait for patients. it tookjust over a yearfor me to get my transplant, and i deteriorated a lot during that time, and i was constantly in and out of hospital, getting weaker and weaker, so yes, it was a terrible and terrifying time. here in gothenburg,

one team are trying to solve this, and they're using technology that's a bit like a 3—d printer. their aim? well, it's to grow organs from cells, here in this lab. no donor necessary. today we are going to look at printing skin. the skin is composed of different layers. 0k. and every layer has different types of cells and combinations. it is the human body's largest organ but even a small skin model requires millions of cells. they're mixed into different bio—inks for the machine to choose between. you really design a code, what tells the printer what to print, when, and in which structure. it's a lot more visible than i expected with the naked eye. a hollow blood vessel structure has been layered inside this one, and a syringe—like printhead has a different purpose.

so you can actually print cells for hair follicles to really replicate the skin. at this stage it kind of looks like a bit of toothpaste, but actually, it is seriously complicated cells in here. while 3—d—printed skin could be applied in surgical grafts, drug and cosmetics testing, the cells have to mature first. this is where we culture the samples we've printed. they're kept in incubators for several weeks, and this tray is about a week old. the tough part, which is mimicking the top of our skin, is on top. a mix of proteins and nutrient molecules is fed in and the waste is removed. all while being closely monitored. the beauty with this microscope is you can actually watch your sample through an ipad, so it's no longer looking through those small eye things. green dots for living cells, red for dead.

so there's not that many dead cells here which you can see. which is a very good sign. close analysis of the end results is needed to finetune. cellink has been printing cancer tumours, so that patients could receive personalised treatments without enduring drug trials themselves. they've also made liver models for drug screening campaigns, and are helping beauty brands become animal cruelty—free, thanks to testing on lab—grown skin. in this gothenburg hospital, researchers plan to put such bio—printed cartilage in patients with muscle issues in just a few years. first patients is of course the sports injuries, because they will probably heal better, at least we think so, but also for elderly patients or patients that suffer from osteoarthritis. we get very nice cartilage tissue that have healing capacities, so we are very optimistic. further studies are needed to prove the methods are safe, but it could save time and money.

we can actually print what the damage looked like before. we can actually print directly into the knee, probably, in the future. we can mass—produce it, i mean, we can start with a printer and then go home and make thousands of copies. and more complex procedures are coming down the line. what do you feel is the ultimate aim? many people die waiting in the line for organ transplantation, so what we are hoping is that this technology in the future will actually be able to provide these organs. how far off are we? i think 15, 20 years is when we might see it in clinic. simpler organs can be seen very, very soon. but if we're talking a full organ, internal organ, that will take some time. one of my oldest friends is alive, thanks to a donor liver. to not have that over—a—year wait, to know that they would be potentially growing and organ for me, if that's all it took, i would have been

in a stronger place to have the operation in the first place. it stops a loss of the worry, i would imagine, because you know it's there. unlike this waiting game that you don't know when it's your turn. would you feel differently about having an organ that didn't mean that someone had to die? you're waiting for somebody to die and you're waiting for that person to be in the right blood group, the right size. you know, i couldn't have a 6'8", massively obese gentleman, because it wouldn't have fitted in my abdomen, so if you're able to eradicate all of that and then almost home—grow your own to the exact perfect fit, yes, i think it would be life—changing for thousands of people. there is a way to go yet, but the first steps from skin cells to mending muscles are promising. i won't be the only one hoping lab—grown organs could cut the queue

to life—saving operations. over the years, video calls have got better and better. recently, they've got so lifelike, it's ridiculous. it's ridiculous. do you remember portl? this is you in a box? yeah, that's me in a box. this is an la—based start—up that was building, to be honest, the closest thing to holograms that i think i've seen. they've since renamed themselves proto, and now they've come up with something that promises to take up a little less space in your living room. and nick kwek�*s got an early peek. it's crossed contintents to be here, and today it's making its all—singing, all—dancing, star—studded debut. and my honest reaction? utterly gobsmacked. this is weird, isn't it? to the proto team, happy cinco de mayo.

viewing the tabletop—sized box is like watching a 3—d movie, without the glasses, but with shrunken characters and objects appearing like they're physically inside. well, hello there! oh, hi! when spencer interviewed me, i showed him the non—working prototype. it was only a vision, but here i am, beaming into an actual working device. i can't believe i'm actually speaking to you now, live, in la! i'm actually not a hologram, i'm really in this thing! let me out! we wanted to go from the boardroom and the conference room into the living room. you shouldn't have to be a millionaire or a celebrity, or even a digital resurrection of a late legend. this should be so grandpa and timmy can communicate, whether they're ten miles away or 10,000 miles away. looking a lot smaller than i recall. when a volumetric, real—sized person, even shrunk down into a tabletop—sized version of a person,

materialises into a space, there isjust a much more emotional connection thatjust does not exist when you are just chest—up on a flat, 2—d display. this is sort of like if zoom and being there had a baby. it's the real empty space within the box, the shadows on the inside walls, and the reflections that create the illusion of physical presence. 0h, paris hilton! i am so excited and proud to be a part of this! i'm looking at paris' eyes, and she's looking back into mine. and wherever i am, looking around the device, we're maintaining eye contact. a trick, thanks to the box�*s depth. what about that physical connection that you have with people when you meet them for the first time, orfor a business meeting? people are no longer getting on an aeroplane and travelling from city to city to city, and spreading jet fuel all over the earth. as we're well aware, video calls can be temperamental, with even the slightest

of delays putting us off. but this is fairly slick, even whilst hotspotting over 4g on my phone. we've gotten the transmission to around 200 milliseconds. which, perceptively, is instantaneous to anybody interacting. many holographic devices, as you see in the acquisition, is super complicated. it requires multiple cameras, multiple angles, a chromakey device. we are able to achieve a holographic transmission with one camera. today, david is being captured in his professional studio, but they're working on an app so people can record themselves from their smartphones, and eventually they want the m to do the recording itself. its front—facing camera could be very smart, indeed. we have technology that's being deployed very soon to do automatic demographic and age recognition, so we can even understand if you are male, female, your age range, and serve your content to that effect.

it will cost around two grand when it hits the mass market as early as next month, but proto is already working with big brands to help them flog stuff, and is also entering the health and education sectors. they're using it so doctors can beam in and train future healthcare providers how to treat and diagnose people. they're teaching students in multiple universities at the exact same time! david, thank you so much forjoining me. all right, beam you later! this that was nick, and now it's time to look at this week's tech news. the uk's competition and markets authority has again ordered meta to sell giphy. they found that owning it could harm competition. this is the first time the uk has blocked a takeover by a tech giant. kanye west, or ye to his friends, has agreed to buy the so—called "un—cancellable" social media platform, parler.

his anti—semitic posts meant his twitter and instagram accounts were restricted. so far, little has been revealed about the deal. ye will say that he is a proponent of free speech and that he will be buying this website to promote that. parler has, what, about a million users, reportedly. twitter has got 238 million. looking at it from a financial analyst's point of view, twitter doesn't charge for its services, it doesn't make any money, so it will be interesting to see what he thinks he can do with it and what benefit he could derive beyond, perhaps, his championing of what he would call free speech. chile's government has deployed its first a! listening smart buoy. 600 miles off the coast, the buoy monitors oxygen and temperature levels in the ocean, as well as alerting ships about nearby whales. finally, fedex is saying goodbye to its robot delivery programme, roxo. fedex�*s chief transformation officer said it's no longer meeting customer needs, and this follows the news that amazon is also scaling down its own last—mile

delivery robots. in 2018, the click team went undercover to investigate a scam. people were being promised huge profits if they invested in an apparently new cryptocurrency called 0necoin and then talked their friends and family into doing the same. the problem was, 0necoin didn't exist. a few months later, journalist jamie bartlett started investigating a mysterious twist in this tale. 0necoin's wealthy and charismatic co—founder and figurehead, dr ruja ignatova, regularly seen on stage at lavish events promoting 0necoin's supposed promise, had vanished — and jamie wanted

to track her down. for eight weeks, jamie fronted one of the bbc�*s most successful podcasts as he reported on his hunt for the missing cryptoqueen in almost real—time. what a house. 0h, there's a security guard there. we are looking for the house of dr ruja ignatova? it's this one. 0k, do you know where she is? no idea. doesn't know where she is. he spoke to people ruja had known, saw the spoils of her wealth, and followed leads from listeners around the world to try and find someone who had persuaded so many people to invest in a get—rich—quick scheme of astronomical proportions. it was the perfect scam at the perfect time. the hype of bitcoin, the lack of regulation, the price of bitcoin through the roof. the pitch was, "0necoin is bitcoin but better. "0necoin is bitcoin but cheaper.

"and if you want to make, not 5% a year, not 10%, "1000% a year, you've probably missed that with bitcoin." jamie has been able to piece together most of the 0necoin story which he has turned into a book. but even now there are new developments, which means more episodes of the podcast as well. dr ruja ignatova has just been added to the fbi�*s top ten most wanted fugitives list, making her now one of the most wanted women in the world. is that thanks to you? laughs. be careful how you answer. i'm not sure, but the way i see that media works sometimes is that if you can create a lot of excitement and interest in a story, suddenly the authorities decide they're going to act. i think what is interesting about her appearing on that list is she is the first ever crypto scammer, so alongside cartel bosses, alleged murderers, now we have a crypto scammer. how difficult do you think

it is to disappear completely these days? i had always assumed almost impossible. except that... if you have got enough money then you can change your appearance somewhat, you can fairly easily obtain fake identity documents, and as long as you have iron discipline, you don't make a mistake, you stay undercover or you are very well protected by governments that are happy to keep you there, i think you can disappear. but not only do you need discipline, your close friends and family need to watch their digital footprints too. we were trying to find this hidden mansion we had heard rumours about in dubai, that we believed ruja had purchased — no—one knew where it was. we scoured through her brother's instagram and found

he had taken a selfie six months after ruja had disappeared, which he had tagged as being in sofia, bulgaria. but the background looked like it was somewhere in the middle east. and there were a few buildings in the background, so you know, there were a few little clues, that we brought in a couple of open source intelligence specialists who are experts in being able to take a photograph and track down the precise location it was taken. so this one guy does a lot of reverse image searches for all the buildings in the background, and he has found the video of the exact buildings in the same order as in the selfie. so he thinks, great, i can now tell you that it is in dubai. where in dubai? well now i will use google satellite to start trying to look down at where those buildings are, and try and work out a line of sight using sort of basic geometry, really, to try and pinpoint down to the exact location.

and he starts matching up trees, pylons, small buildings, walls he can see on google satellite, that match the background of the instagram selfie. all the way until he is able to identify little patches of stains on walls, and then finds the house using google satellite that matches the picture, and basically sends us an address and says, "this is where the photo "was taken, in the back garden of that property on that "street," and ijust couldn't believe it, from one instagram picture, that is how much specialist can find. that is how much a specialist can find. and in the book, you say you haven't posted much online yourself since? there is a reason for that, because i know the people involved in 0necoin probably don't like me very much. and i realised, even if i posted a picture of me in my back garden, there is a possibility someone could work out my home address, because i've done it to them.

spencer talking to jamie bartlett there. meanwhile, i have been me to meet a company hoping to create affordable, hollywood—quality avatars with your mobile in minutes. shrinking the hollywood—sized setup and budget might make a booth like this possible anywhere — whether it is to create a gaming avatar, in a makeup department for skin analysis, for influencers flogging stuff, or dare i say it, for the ever threatened metaverse. lumirithmic�*s setup here consists of a series of ipads, iphones and stands, so the cost of creating this is the price of those items. you could also use android devices. once the images are all taken at the same time, they are stitched together to create a high—resolution picture. in a couple of seconds, i am scanned down to a tenth of a millimetre's detail. an imperial college spinout,

experience and tech are brought together to initially perfect stills from all angles, recreating any lighting before moving on to producing video. i have been doing research on facial appearance capture for over 15 years in academia, first at the university of southern california, where i worked on hollywood—scale scanning of actors�* faces for movies such as avatar. most scanning techniques only captures geometry and not the appearance. here, because we focus on high—quality appearance capture, the resolution comes from the reproduction of that appearance in a realistic manner in a 3—d rendering. here we have the 2—d renders. this one looks like those images where you see the sun damage to your skin. here with controlled lighting conditions, we are analysing your skin's reflections and breaking it into a constituent colour texture map, a shine map, a shape map, and which captures yourfine skin pores and and wrinkle detail...

wrinkles, how dare you! i know. laughs. you're a very brave man. and combining all of that with computer graphics rendering, i can now animate the light whichever way i like, and the skin will react. and in case you wondered, the weird rectangles in my eyes are the reflection of the ipads. 0nto the 3—d images now, which thankfully feel a bit kinder than the previous overly analytical close—ups. and there's one striking feature. the lighting is quite something. and to think that that's virtual, because that really looks like we are moving throughout times of the day. the ability to create believable shadows is where the realism comes from. even in an image that isn't itself animated, so getting this perfected should lead the way to better video versions down the line. although, what's

happened to my ear? but the holy grail is being able to do all of that with one of these. and the company has cracked it — the pictures are lower resolution and they won't let me film the process, but i can show you the results. there's still a huge amount of detail here, my hair goes a little bit funny as we change the lighting, but what is the actual difference in resolution? this resolution is about 2k and then the full desktop setup you have seen has a resolution of about ak, but the quality is still preserved and the fine skin details and also the geometry. the resolution is clearly good enough for most consumer applications. i don't think i'd want it to be any better. but... definitely further work required in terms of work to be done in terms of cutting out smooth silhouettes. and what is most challenging there is not the body or the face but the human hair. the hair silhouettes are very fuzzy and not discrete, and so this is where better

algorithms will have to be created. even hollywood has the same issue, but it does have people for that. the scanning process usually does a pretty similar job that we are doing. it is the hair will then be modelled back to most of the hollywood rendering systems using artistic modelling processes for hair. so hair is its own research problem in some sense. so these avatars may not be perfect yet, but they do seem to be heading in the right direction. how long do you think it will be before they've got a fully working virtual version of us too? how do you know they haven't already? uh, thanks for watching, we will see you soon.

hello. we're going to see out the rest of the month with temperatures above where we might expect them to be for this time of year, by day and by night. staying unsettled, a windier day again for wednesday, the chance of catching a shower, after some early wet weather clears away. the bulk of the wet weather from this area of low pressure coming through overnight and into the first part of wednesday morning. before then, sunshine and the chance of catching a blustery shower. and, if anything, temperatures edge up a few degrees in the next couple of days. we are drawing the air up into the uk from a long way south of us. and these are the starting temperatures for wednesday morning, for the most part in double figures. now, we have got some rain into scotland that will push into the northern isles, clearing shetland in the afternoon. a band of showers across all parts following on behind. but look at the timeline. this is lunchtime, and then into the afternoon,

it is sunny spells. showers mainly in scotland and northern ireland, some heavy and thundery, a few pushing into wales and western parts of england, but the further east you are, the bulk of the afternoon could well be dry. these are average wind speeds. gusts are going to be higher. coastal gales through the irish sea, some gusts in the western isles to around 50 miles an hour or so. out of that breeze and in the sunshine, there'll be some warmth around in the afternoon in parts of eastern and south—east england, not just wednesday, but for the rest of the week. a few spots will get to 20, if not a bit higher than that. as we go on through wednesday night and into thursday morning, we'll see cloud and rain gathering and starting to push up across parts of england and wales. another weather front may just bring some rain into the far west of northern ireland and northwest scotland early on thursday. another very mild start. so cloud and outbreaks of rain to clear away from england and wales on thursday, and a brighter, dry afternoon following. some of that rain pushing through northern ireland into scotland, where we keep a lot of cloud around into the afternoon. and again, these temperatures are well above the long—term average. now, looking at the big picture going into friday, low pressure weather

fronts again, with a lot of the wet weather, though, again going through overnight and into friday morning, clearing from scotland and northern england, for example, quite quickly on friday morning. maybe just a weaker area of showers for east anglia and the south—east — not much in the way of rainfall here. then it's a case of sunny spells, the chance of a shower, though many places with a dry afternoon, before some rain edges back towards southern areas later on friday. for the weekend, staying unsettled, yes. it does look like a lot of the wet weather, though, will move through overnight saturday and into sunday morning before clearing to sunny spells and showers.

welcome to bbc news. i'm lucy grey. our top stories: britain's third prime minister in a matter of weeks, rishi sunak, warns of difficult economic times ahead, but says he's "not daunted". i fully appreciate how hard things are. and i understand too that i have work to do to restore trust after all that has happened. and the work begins with shaping the new cabinet — some returning, some retained. mourners march in nablus during funerals of five palestinians killed in an israeli raid. and adidas cuts ties with the rapper ye, calling his anti—semitic postings on social media " hateful and dangerous".